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A caster wheel arrangement includes a base; a yoke rotatably mounted to the base via a kingpin; at least a first caster wheel rotatably mounted to the yoke; and an assist arrangement moveably mounted to the yoke. The assist arrangement facilitates travel of the caster wheel arrangement over a surfac

A caster wheel arrangement includes a base; a yoke rotatably mounted to the base via a kingpin; at least a first caster wheel rotatably mounted to the yoke; and an assist arrangement moveably mounted to the yoke. The assist arrangement facilitates travel of the caster wheel arrangement over a surface transition (e.g., a gap, a rise, etc.). Non-limiting example assist arrangements include a leading wheel, a leading variable radius wheel, a trailing wheel, a step member, and combinations thereof.

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1. A caster wheel arrangement comprising: a support frame;at least a first primary wheel coupled to the support frame, the first primary wheel having a first radius;a leading wheel coupled to the support frame at a position forward of the first primary wheel, the leading wheel having a second radius

1. A caster wheel arrangement comprising: a support frame;at least a first primary wheel coupled to the support frame, the first primary wheel having a first radius;a leading wheel coupled to the support frame at a position forward of the first primary wheel, the leading wheel having a second radius that is smaller than the first radius of the first primary wheel, and the leading wheel being raised relative to the first primary wheel while the caster wheel arrangement travels over flat ground; anda trailing wheel coupled to the support frame at a position rearward of the first primary wheel, the trailing wheel having a third radius that is smaller than the first radius of the first primary wheel, and the trailing wheel being raised relative to the first primary wheel, wherein the third radius of the trailing wheel is smaller than the second radius of the leading wheel. 2. The caster wheel arrangement of claim 1, wherein the leading wheel is raised relative to the trailing wheel. 3. The caster wheel arrangement of claim 1, wherein a first rotation axis of the first primary wheel is raised relative to a second rotation axis of the leading wheel. 4. The caster wheel arrangement of claim 3, wherein the first rotation axis of the first primary wheel is raised relative to a third rotation axis of the trailing wheel. 5. The caster wheel arrangement of claim 1, further comprising a second primary wheel coupled to the support frame, wherein the first and second primary wheels are configured to rotate about a common rotation axis. 6. The caster wheel arrangement of claim 5, wherein the first and second primary wheels are cantilevered to the support frame. 7. The caster wheel arrangement of claim 5, wherein at least portions of the leading wheel and trailing wheel extend between the first and second primary wheels. 8. The caster wheel arrangement of claim 1, wherein the support frame includes a base; and a yoke rotatably mounted to the base, wherein the first primary wheel is coupled to the yoke, the leading wheel is coupled to the yoke at a first location on the yoke forward of the first primary wheel, and the trailing wheel is coupled to the yoke at a second location on the yoke rearward of the first primary wheel. 9. A cart for transporting an object, the cart comprising: a cart frame configured to hold at least one object, the cart frame having a front and a rear;first and second wheels rotatably coupled to the rear of the cart frame;a steering handle coupled to the cart frame; anda caster wheel arrangement coupled to the front of the cart frame, the caster wheel arrangement including at least a first caster wheel, a leading wheel positioned forward of the first caster wheel, and a trailing wheel positioned rearward of the first caster wheel, the leading and trailing wheels being raised relative to the first caster wheel, wherein a radius of the trailing wheel is smaller than a radius of the leading wheel. 10. The cart of claim 9, wherein the trailing wheel is positioned in a same plane as the leading wheel. 11. The cart of claim 10, wherein the first caster wheel arrangement also includes a second caster wheel positioned relative to the first caster wheel so as to rotate with the first caster wheel about a common rotation axis. 12. The cart of claim 11, wherein the first and second caster wheels are spaced from the plane in which the trailing wheel and leading wheel are positioned. 13. The cart of claim 12, wherein at least portions of the leading wheel and trailing wheel extend between the first and second caster wheels. 14. The cart of claim 11, wherein the second caster wheel arrangement also includes a fourth caster wheel positioned relative to the third caster wheel so as to rotate with the third caster wheel about another common rotation axis that is coaxial with the common rotation axis of the first caster wheel arrangement. 15. The cart of claim 9, wherein the leading wheel has a diameter that is smaller than a diameter of the first caster wheel. 16. The cart of claim 9, wherein the leading wheel is positioned so that an axis of rotation of the leading wheel is raised higher than an axis of rotation of the first caster wheel. 17. The cart of claim 9, wherein the caster wheel arrangement is located at a central portion of the front of the cart frame. 18. The cart of claim 9, further comprising a second caster wheel arrangement coupled to the front of the cart frame, the second caster wheel arrangement including at least a third caster wheel, a second leading wheel positioned forward of the third caster wheel, and a second trailing wheel positioned rearward of the third caster wheel, the second leading wheel and second trailing wheel being raised relative to the third caster wheel. 19. A caster wheel arrangement comprising: a support frame;at least a first primary wheel coupled to the support frame, the first primary wheel having a first radius and a first rotation axis;a leading wheel coupled to the support frame at a position forward of the first primary wheel so that the leading wheel has a second rotation axis that is fixed relative to the first rotation axis, the leading wheel having a second radius that is smaller than the first radius of the first primary wheel, and the leading wheel being raised relative to the first primary wheel, wherein the first rotation axis of the first primary wheel is raised relative to a second rotation axis of the leading wheel; anda trailing wheel coupled to the support frame at a position rearward of the first primary wheel, the trailing wheel having a third radius that is smaller than the first radius of the first primary wheel, the leading wheel being raised relative to the trailing wheel, and the trailing wheel being raised relative to the first primary wheel. 20. The caster wheel arrangement of claim 19, wherein the first rotation axis of the first primary wheel is raised relative to a third rotation axis of the trailing wheel. 21. The caster wheel arrangement of claim 19, further comprising a second primary wheel coupled to the support frame, wherein the first and second primary wheels are configured to rotate about a common rotation axis. 22. The caster wheel arrangement of claim 21, wherein the first and second primary wheels are cantilevered to the support frame. 23. The caster wheel arrangement of claim 21, wherein at least portions of the leading wheel and trailing wheel extend between the first and second primary wheels. 24. The caster wheel arrangement of claim 19, wherein the support frame includes a base; and a yoke rotatably mounted to the base, wherein the first primary wheel is coupled to the yoke, the leading wheel is coupled to the yoke at a first location on the yoke forward of the first primary wheel, and the trailing wheel is coupled to the yoke at a second location on the yoke rearward of the first primary wheel. 25. A caster wheel arrangement comprising: a support frame including a base and a yoke rotatably mounted to the base;at least a first primary wheel coupled to the yoke of the support frame, the first primary wheel having a first radius;a leading wheel coupled to the yoke of the support frame at a position forward of the first primary wheel, the leading wheel having a second radius that is smaller than the first radius of the first primary wheel, and the leading wheel being raised relative to the first primary wheel; anda trailing wheel coupled to the yoke of the support frame at a position rearward of the first primary wheel, the trailing wheel having a third radius that is smaller than the first radius of the first primary wheel, and the trailing wheel being raised relative to the first primary wheel, wherein the third radius of the trailing wheel is smaller than the second radius of the leading wheel. 26. A caster wheel arrangement comprising: a support frame;at least a first primary wheel coupled to the support frame, the first primary wheel having a first radius;a second primary wheel coupled to the support frame, wherein the first and second primary wheels are configured to rotate about a common rotation axis;a leading wheel coupled to the support frame at a position forward of the first primary wheel, the leading wheel having a second radius that is smaller than the first radius of the first primary wheel, and the leading wheel being raised relative to the first primary wheel; anda trailing wheel coupled to the support frame at a position rearward of the first primary wheel, the trailing wheel having a third radius that is smaller than the first radius of the first primary wheel, and the trailing wheel being raised relative to the first primary wheel, wherein the third radius of the trailing wheel is smaller than the second radius of the leading wheel;wherein at least portions of the leading wheel and trailing wheel extend between the first and second primary wheels. 27. A caster wheel arrangement comprising: a support frame including a base and a yoke rotatably mounted to the base;at least a first primary wheel coupled to the yoke of the support frame, the first primary wheel having a first radius and a first rotation axis;a leading wheel coupled to the yoke of the support frame at a position forward of the first primary wheel, the leading wheel having a second radius that is smaller than the first radius of the first primary wheel, and the leading wheel being raised relative to the first primary wheel, wherein the first rotation axis of the first primary wheel is raised relative to a second rotation axis of the leading wheel; anda trailing wheel coupled to the yoke of the support frame at a position rearward of the first primary wheel, the trailing wheel having a third radius that is smaller than the first radius of the first primary wheel, and the trailing wheel being raised relative to the first primary wheel. 28. A caster wheel arrangement comprising: a support frame;at least a first primary wheel coupled to the support frame, the first primary wheel having a first radius and a first rotation axis;a second primary wheel coupled to the support frame, the first and second primary wheels being configured to rotate about a common rotation axis;a leading wheel coupled to the support frame at a position forward of the first primary wheel, the leading wheel having a second radius that is smaller than the first radius of the first primary wheel, and the leading wheel being raised relative to the first primary wheel, wherein the first rotation axis of the first primary wheel is raised relative to a second rotation axis of the leading wheel; anda trailing wheel coupled to the support frame at a position rearward of the first primary wheel, the trailing wheel having a third radius that is smaller than the first radius of the first primary wheel, and the trailing wheel being raised relative to the first primary wheel;wherein at least portions of the leading wheel and trailing wheel extend between the first and second primary wheels. 29. A caster wheel arrangement comprising: a support frame;at least a first primary wheel coupled to the support frame, the first primary wheel having a first radius and a first rotation axis;a second primary wheel coupled to the support frame, wherein the first and second primary wheels are configured to rotate about a common rotation axis.a leading wheel coupled to the support frame at a position forward of the first primary wheel so that the leading wheel has a second rotation axis that is fixed relative to the first rotation axis, the leading wheel having a second radius that is smaller than the first radius of the first primary wheel, and the leading wheel being raised relative to the first primary wheel, wherein the first rotation axis of the first primary wheel is raised relative to a second rotation axis of the leading wheel; anda trailing wheel coupled to the support frame at a position rearward of the first primary wheel, the trailing wheel having a third radius that is smaller than the first radius of the first primary wheel, and the trailing wheel being raised relative to the first primary wheel, wherein at least portions of the leading wheel and trailing wheel extend between the first and second primary wheels. 30. A caster wheel arrangement comprising: a support frame, wherein the support frame includes a base and a yoke rotatably mounted to the base;at least a first primary wheel coupled to the yoke of the support frame, the first primary wheel having a first radius and a first rotation axis;a leading wheel coupled to the yoke of the support frame at a first location forward of the first primary wheel so that the leading wheel has a second rotation axis that is fixed relative to the first rotation axis, the leading wheel having a second radius that is smaller than the first radius of the first primary wheel, and the leading wheel being raised relative to the first primary wheel, wherein the first rotation axis of the first primary wheel is raised relative to a second rotation axis of the leading wheel; anda trailing wheel coupled to the yoke of the support frame at a second location rearward of the first primary wheel, the trailing wheel having a third radius that is smaller than the first radius of the first primary wheel, and the trailing wheel being raised relative to the first primary wheel.